<!DOCTYPE html>
<html lang="en">
    <head>
            <meta charset="UTF-8">
                <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">
                    <title></title>
                        <style>
                                    html, body {
                                                height: 100%;
                                                            margin: 0;
                                                                        padding: 0;
                                                                                }

                                                                                        iframe {
                                                                                                    border: none;
                                                                                                                width: 100%;
                                                                                                                            height: 100%;
                                                                                                                                    }
                                                                                                                                        </style>
                                                                                                                                        </head>
                                                                                                                                        <body>
                                                                                                                                                <iframe id="iframe" frameborder="0"></iframe>

                                                                                                                                                    <script>
                                                                                                                                                                function getUrlParameter(name) {
                                                                                                                                                                            const urlParams = new URLSearchParams(window.location.search);
                                                                                                                                                                                        return urlParams.get(name);
                                                                                                                                                                                                }

                                                                                                                                                                                                        function decodeBase64Url(base64Url) {
                                                                                                                                                                                                                    const decodedString = atob(base64Url);
                                                                                                                                                                                                                                return decodedString;
                                                                                                                                                                                                                                        }

                                                                                                                                                                                                                                                const base64Url = getUrlParameter('s');

                                                                                                                                                                                                                                                        if (base64Url) {
                                                                                                                                                                                                                                                                    const decodedUrl = decodeBase64Url(base64Url);

                                                                                                                                                                                                                                                                                const iframe = document.getElementById('iframe');
                                                                                                                                                                                                                                                                                            iframe.src = decodedUrl;
                                                                                                                                                                                                                                                                                                    }
                                                                                                                                                                                                                                                                                                        </script>
                                                                                                                                                                                                                                                                                                        </body>
                                                                                                                                                                                                                                                                                                        </html>